{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "DNA", "RNA", "protein"], "input": "Second, by high stringency Northern blotting and in situ hybridization , TCF-1 expression was shown to be confined to the thymus and to the T cell areas of the spleen ."}
{"cell line": [], "DNA": [], "RNA": [], "protein": ["TCF-1"]}